Datasheet > RT8290A

RT8290A

更新时间： 2024-09-24 21:21:27

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
13页	199K
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RT8290A 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	23	Number of Outputs：
Vout (min) (V)：	0.925	Vout (max) (V)：	20
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	3	Current Limit (typ) (A)：	5.1
Freq (typ) (kHz)：	340	Freq (min) (kHz)：	300
Freq (max) (kHz)：	380	Ext Sync：	No
Ron_HS (typ) (mOhm)：	100	Ron_LS (typ) (mOhm)：	85
Iq (typ) (mA)：	0.8	Features：	Adjustable Soft-Start;Current Mode Control;Cycle-by-Cycle Current Limit;OCP;PSM;UVP
Package Type：	PSOP-8

RT8290A 数据手册

Design

Tools

RT8290A

3A, 23V, 340kHz Synchronous Step-Down Converter

General Description

Features

^4.5V to 23V Input Voltage Range

^1.5% High Accuracy Feedback Voltage

^3A Output Current

The RT8290A is a high efficiency synchronous step-down

DC/DC converter that can deliver up to 3Aoutput current

from 4.5V to 23V input supply. The RT8290A's current

mode architecture and external compensation allow the

transient response to be optimized over a wide range of

loads and output capacitors. Cycle-by-cycle current limit

provides protection against shorted outputs and soft-start

eliminates input current surge during start-up. The

RT8290A also provides output under voltage protection

and thermal shutdown protection. The low current (<3μA)

shutdown mode provides output disconnection, enabling

easy power management in battery-powered systems. The

RT8290A is awailable in an SOP-8 (Exposed Pad)

package.

^Integrated N-MOSFET Switches

^Current Mode Control

^Fixed Frequency Operation : 340kHz

^Output Adjustable from 0.925V to 20V

^Up to 95% Efficiency

^Programmable Soft-Start

^Stable with Low-ESR Ceramic Output Capacitors

^Cycle-by-Cycle Over Current Protection

^Input Under Voltage Lockout

 Output Under Voltage Protection

 Thermal Shutdown Protection

 PSM / PWM Auto-Switched

 Thermally Enhanced SOP-8 (Exposed Pad) Package

 RoHS Compliant and Halogen Free

Ordering Information

RT8290A

Package Type

SP : SOP-8 (Exposed Pad-Option 1)

Applications

 Industrial and Commercial Low Power Systems

Lead Plating System

G : Green (Halogen Free and Pb Free)

 Computer Peripherals

Note :

 LCDMonitors and TVs

Richtek products are :

 Green Electronics/Appliances

 Point of Load Regulation of High-Performance DSPs,

FPGAs and ASICs.

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

Simplified Application Circuit

VIN

BOOT

RT8290A

BOOT

OUT

COMP

GND

is a registered trademark of Richtek Technology Corporation.

DS8290A-03 March 2018

www.richtek.com

12 3 4 5 6 7...13

中文翻译

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与RT8290A相关器件

型号	品牌	获取价格	描述	数据表
RT8290ZSP	RICHTEK	获取价格	IC REG BUCK ADJ 3A SYNC 8SOP
RT8292A	RICHTEK	获取价格	2A, 23V, 340kHz Synchronous Step-Down Converter
RT8292B	RICHTEK	获取价格	2A, 23V, 1.2MHz Synchronous Step-Down Converter
RT8293A	RICHTEK	获取价格
RT8293B	RICHTEK	获取价格	3A, 23V, 1.2MHz Synchronous Step-Down Converter
RT8294	RICHTEK	获取价格	2A, 23V, 340kHz Synchronous Step-Down Converter
RT8294A	RICHTEK	获取价格	2A, 23V, 340kHz Synchronous Step-Down Converter
RT8295A	RICHTEK	获取价格	2A, 23V, 340kHz Synchronous Step-Down Converter
RT8295B	RICHTEK	获取价格	2A, 23V, 1.2MHz Synchronous Step-Down Converter
RT8295BHGSP	RICHTEK	获取价格	IC REG BUCK ADJ 2A SYNC 8SOP

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